Saliva-pttmp



F. DAVISON'O` LIBERTY, VIRGINIA.

SALIVA-PUMP.

Specication of Letters Patent No. 10,426, dated January 17, 1854.

To all whom t may concern:

Be it known that'I, F, DAvisoN, ofLiberty, in the county of Bedford and State of Virginia, have invented a new and useful Dental Instrument for Removing the Saliva or Spittle from the Mouth and Keeping it Dry During the Operation of Filling Teeth; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Y Figure l, is a perspective view of the instrument in a vertical position. Fig. 2, is a vertical central section of the same.

Similar letters of reference in each of the several figures indicate corresponding parts.

This invention relates to a very simple, useful. and pleasant method of enabling the patient or subject to remove the saliva or spittle from the mouth and keep it dry, while the ydentist is filling the lower teeth; to effect which, as every dentist is well aware, is very important and has heretofore been a very difficult thing to accomplish, and consequently dentists very often, in lling a very bad tooth, are obliged to fill the mouth with so-me unpleasant substance to absorb the saliva as fast as it accumulates or runs in. By the employment of my instrument the saliva can be removedv with ease, and patients are not subjected to the annoyance of having some absorbing substance thrust into their mouths.

To enable others skilled in the art to make and use my invention I will proceed to describe its construction and operation.

A, is a flat hollow tube, bent somewhat after the form of a yoke so as to fit over the teeth and B, C, are two short tubes secured on the ends of the yoke shaped tube A, and communicating with its interior they being open at both their ends a, a, as seen in the drawing. These tubes B, C, are made curving or form sections of circles corresponding with the circles of the under jaw. The tube B, fitting between the under lip and jaw and that C, behind the teeth and under the tongue. c

D, is a long hollow tube having one of its ends connected to and communicating with the interior of the yoke shape tube A, in the manner shown in Fig. 2, and its other end carried down vertically and connected to a cylindrical valve box E.

-G is apump cylinder-placed in a horizontal position and situated so that its piston may be convenient to be" operated by the hands of the patient.

F, is the piston of the cylinder G; its` rod has a button e, on its outer end for the thumb of the .patient to bear against while moving t-he piston home.

I, is a spiral spring secured to the bottom on back end of thecylinder G and connected to the bottom of the piston in any convenient way, this spring is for automatically returning the piston/after being thrown or shoved home by the patient. u

.E, H, are valve boxes and b, c, are short pipes connecting them to the pump. These short pipes are placed in a line with the pipe D and communicate with it by meansof the valves cl', ci, placedV in the boxesE and H; g, is another pipe secured to the lower portion of the valve box H, and extending down some distance and connecting with a suitable receptacle for the saliva. The valve d, just mentioned issecured on the lower end of tube D, and d', on the lower endy of the tube c. They are made of india rubber and arranged so as to open and close alternately-d', opening simultaneous with the drawing or throwing out of the piston and the closing of al; and vice versa. Consequently after the saliva has beenfdrawn out of the mouth into the cylinder G through the valve al and the piston pressed homeV Aagain the saliva will be forced out of the cylinder into the pipe c, and through the valve rl, on to the napkin or receptacle. y

When this instrument is to be used the dentist places the bent tube A, overthe under jaw, one end under the tongue and the other between the under'lip and jaw; and directs the patient to hold it with the left -hand and with the thumb of the right hand press the piston to the bottom'of the cylinder G, and then withdraw the thumb and it will automatically assume its original position and cause the valve d', to open and the saliva to be sucked out of the mouth through the short tubes B, C, into the flatbent tube A, and from it, along the tube D, and through valve d', into the cylinder G, as shown by ton now must again be pressed in by the patient andthereby close the valve d', Y.and cause the valve 0l, to open simultaneous with the closing of that d', so as to allow the blue color in the drawing Fig. 2. The pissaliva to be discharged from the cylinderAA through the section g, of the tube D, o'n`to a napkin or other receptacle.` Simultaneous With the discharge of the saliva the WithdraWal of the same from the mouth is effected and thus the operation is'continu'ous and all the saliva can be drawn out of the mouth as fast as it flows in and thereby the operation of filling the under teeth is rendered more easy and pleasant both to the patient and operator. v'

This apparatus is not necessary When filling the upper teeth as they can be kept dry Without it. 

